US Patent 6968590 Disassemblable toothbrush with positive blocking

A disassemblable toothbrush, includes a bristled portion and a handle portion, the bristled portion comprising a coupling part having at least one flexible working portion provided with a tooth and the handle portion comprising a seat for engagement of the coupling part which has at least one locating element for retaining the tooth, in which the engaging seat (4) comprises a recess (4b) for housing a deformable elastomeric mass (E) able to exert an elastic reaction pressing against the flexible working portion of the coupling part so as to keep the tooth (3c) actively engaged with the locating element (6).